1
Faulty speedo finally fixed! Sat Jul 25, 2020 4:27 am
gabriel
![avatar](https://i.servimg.com/u/f41/11/71/56/74/avatar10.jpg)
Platinum member
![Platinum member Platinum member](https://i.servimg.com/u/f80/11/71/56/74/bmw-4s10.gif)
![Faulty speedo finally fixed! Dba38710](https://i.servimg.com/u/f84/18/78/08/54/dba38710.jpg)
![Faulty speedo finally fixed! 15d99b10](https://i.servimg.com/u/f84/18/78/08/54/15d99b10.jpg)
![Faulty speedo finally fixed! 25909010](https://i.servimg.com/u/f84/18/78/08/54/25909010.jpg)
Hi
My speedo shut down approximately eight years ago. Tachometer was fine.
Decided to try once again to open the gauge cluster.
I looked at the long thin board (signal amplifier) and didn’t notice anything unusual. I decided to check the other side of the board and noticed there was a scorch mark and the copper tracks were a bit of a mess.
Turned the board over and noticed a very faint burn mark underneath a electrolytic capacitor the 10μf next to the green one.
I replaced the capacitor and applied deoxit to all the pins.
The speedometer and odometer now function correctly.
Anyone who has issues with their Speedo, I suggest a careful check of BOTH sides of the board.
Cheers
Gabriel
__________________________________________________
![;BMW;](/users/4211/29/48/93/smiles/2854237993.gif)
1992 BMW K75s